Answer:
A balanced chemical
equation is one which contains an equal number of atoms of each element on both
sides of the equation. For example,
2Ha + O2
® SH2O
According
to the law of conservation of mass, matter can neither be created nor destroyed
in a chemical reaction. During a chemical reaction, the total mass of reactants
and products remain the same. Hence, in a chemical reaction, the number of
atoms of the various elements on both sides must be equal. Therefore, a
chemical equation is to be balanced in accordance with the law of conservation
of mass.
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